config() {
  NEW="$1"
  OLD="$(dirname "${NEW}")/$(basename "${NEW}" .new)"
  # If there's no config file by that name, mv it over:
  if [ ! -r "${OLD}" ]; then
    mv "${NEW}" "${OLD}"
  elif [ "$(md5sum "${OLD}")" = "$(md5sum "${NEW}")" ]; then
    # toss the redundant copy
    rm "${NEW}"
  fi
  # Otherwise, we leave the .new copy for the admin to consider...
}

preserve_perms() {
  NEW="$1"
  OLD="$(dirname "${NEW}")/$(basename "${NEW}" .new)"
  if [ -e "${OLD}" ]; then
    cp -a "${OLD}" "${NEW}.incoming"
    cat "${NEW}" > "${NEW}.incoming"
    mv "${NEW}.incoming" "${NEW}"
  fi
  config "${NEW}"
}

config etc/merecat.conf.new
preserve_perms etc/rc.d/rc.merecat.new
